Straightforward Solvothermal Synthesis toward Phase Pure Li2CoPO4F

Li2CoPO4F, a promising high potential cathode material, has been synthesized for the first time via a one-pot solvothermal synthesis route. The characterization with respect to its crystal structure and electrochemical performance in a lithium half-cell is reported. Scanning electron microscopy, transmission electron microscopy, and X-ray diffraction studies reveal a strong influence of the solvent on the purity of the obtained crystalline phases and the particle morphology with preferred crystal growth orientations. The electrochemical tests of carbon coated materials demonstrate excellent characteristics in terms of high capacity.